Me as well
I have 4 neurological conditions but 2 are feeding off each other and are both refractory. I have been first in full paralysis with severe spinal pain which lead me to an admission to hospital as different than my usual which I can deal with at home on 7th May, I came home by ambulance on 16th May and the 2 ambulance men put me into bed, due to a massive mess up with physio referrals and other key staff going off sick I am still in exact same spot.
In general terms for me, it was a flare that knocked me as 80% of the time I am generally bedbound (that has been going on over the last 7 years the 1st 2 years had remissions but lucky to get a days let up now) as while I have now managed to transfer to commode (a meter to and fro) i cant stand for more than 2 seconds due to give way weakness. I was 35 when these 2 main conditions floored me in 2011.
I currently go between 2 crutches (on really good days), zimmer frame (around the house), rollator with a seat (if out of the house and short distance, like dropped at the front door of GP surgery where it is less than 10m to GP room and same on way back out) and manual wheelchair. The OT has placed an order for a power chair as well. However it's all over my records that appointments may have to be cancelled at short notice as im bedbound again,
Things that have helped me but discuss with your dad if he wants to try these and work with it. If he is able to sit up even 5 mins and try and work his legs or his arms with one of these placed on the floor or table. It will help retain muscle and stop wastage. Here are 3 suggestions and take up less room than a full bike and easier to use,
www.ebay.co.uk/itm/Exercise-Bikes-Digital-Pedal-Arm-Leg-Aid-Mini-Folding-Fitness-Mobility-exerciser/112653730187?epid=25010216621&hash=item1a3aaf818b:g:0m4AAOSwwYpauLw0
www.ebay.co.uk/itm/Exercise-Bike-Arm-Leg-Resistance-Mini-Cycle-Pedal-Exerciser-Workout-Seat-Fitness/263678336561?hash=item3d64741e31%3Am%3AmhL_yNd6y-P0Tyr8g8ckdVg&var=562809913186
www.ebay.co.uk/itm/Armchair-HD-Pedal-Exerciser-Arms-Leg-Restore-Muscle-Strength-Blood-Circulation/152142886645?epid=1744868382&hash=item236c6c36f5:g:jQ4AAOSwQ~ha1zr8
Yes to lots of protein, also coming into winter maybe milky ovaltine in evening as well as its well enhanced with vitamins and comforting. Complan comes in various flavours to be made with milk Strawberry, chocolate, original, vanilla and Banana.
Also as he is 80, if you look over on Carers UK forum and you as daughter are like a "carer" as its different to relationship of previously, there is a lot who have changed their tack with their caree (esp where older) and instead of getting them to take normal food as long as their swallow is OK,
as @WendyCope says the protein drinks are actually disgusting and im not 100% from your post or not but if he is at home, with carers coming in or has had a stay in nursing home or is still in nursing home. If you think he might eat what is nicely termed "nursery food" the same type of stuff like a child as its more important to enjoy the food when ill and immobile and as long as holding the weight, bits of whatever he fancies might be nice. Rather than necessarily vegetables etc and what is meant to be good for him as enjoyment is key.
Raising his feet, if in a hospital bed, i find it helpful to put a memory foam pillow at the bottom and feet are up on that. My feet are currently on mine, the "knees" of the bed raised under mine to keep them level for me, I tend to use different colour pillowcases on the memory foam pillow so can tell at a glance which one needs to be at bottom of the bed.
There is also passive physio exercises for movement which is where you (i mean as in another person not specifically you) are moving his limbs for him instead of him doing it all by himself, it also allows for massage of the sore muscles. Unscented body lotion can be good for massage,
Theis is just from my own current experience, the district nurse advised me to use dermol as lotion, I get it on prescription on recommendation of district nurses.
www.ebay.co.uk/itm/WOOL-PILE-HEEL-PROTECTORS-PRESSURE-CARE-WOOLPILE-DISABILITY-AND-MOBILITY-AIDS/281209052762?epid=1551020775&hash=item41795d9e5a:g:KggAAOxypNtSiIlf
Thats a pair of lambswool heal protectors which do protect them and let them heal, in the meantime can also still use feet on one of those pedal exercisers like a mini bike
If you are co-ordinating things and have others helping you, can i suggest Jointly app, its available from Carers UK (I dont work for them honestly), to buy the app so you can build your circle around your caree and add tasks and notes etc, there is a one off cost of 2.99 - there is also a 14 day free trial to see if it suits you and helps you, you can invite other family / helpers / relevant people to the "Circle"
for both of you, @billysboy its horrible seeing your dad ill and @WendyCope, you are a true survivor, you have fought GBS and came through
@WendyCope Glad you got proper rehab as there wasnt a suitable facility so I ended up being put into a nursing home, I had 5 stays across 2 years, the last 2 was in the nicest home and im glad cos they were the longest in both cases, 5 and 16 weeks respectively and across all 5 stays each time I was given a room in whatever area they had space in as i was short stay, every single time I ended up on the dementia units. Kept things interesting to say the least.